Condenser and heater.



No. 720,614. PATENTED FEB. 17., 1903.

* R. 1-". PIATT. 4

CONDENSER AND HEATER.

APPLICATION FILED JUNE 5, 1902.

N0 MODEL.

WITNESSES Q rm: u'omus PETERS co. PHOTO-LUNG" wnshmmrm. 04 c.

UNITED STATES PATENT OFFICE.

RICHARD F. PIATT, OF LOUISVILLE, KENTUCKY.

CONDENSER AND HEATER.

SPECIFICATION forming part of Letters Patent NO. 720,614, dated February 17, 1903.

' Application filed June 5,1902. Serial No. 110,397. (No model.)

To all whom it may concern.-

Be it known that I, RICHARD F. PIATT, a citizen of the United States, residing at Louisville, in the county of Jefferson, State of Kentucky, have invented a new and useful Improvement in Condensers and Heaters, which improvement is fully set forth in the following specification and theaccompanying drawlugs.

My invention relates to an improvement generallyin that class of condensersand heaters usually constructed in the form of returnbend pipe-coils, although parts of the construction I employ are also suitable for use with ordinary tubular condensers and heaters, and it is my intention in this application to claim as an improvement the application of such parts to the tubular form of construction. a r

In ordinary condensers and heaters constructed in the form of return-bend pipe-coils one pipe is placed within another larger pipe, and anumber of pipes so placed are connected at their ends by means of special return-bend fittings arranged to formreturn-bend coils wherein the outer or larger pipe is made continuous and the inner or smaller pipe is also made continuous, forming two independent passages, one within the other, for the conduction of liquid or gases. The liquid or gas to be heated or cooled is passed through one of these passages, and the liquid or gas which is used to produce the heat or cold in the other liquid or gas is passed through the other passage. When such an apparatus is used for condensing steam or in cooling hot gases or liquids by means of cold water or for heating water by means of steam, lime or other solids held in solution by the water are separated from the water by the heat .and deposited on the surfaces of the pipe. The lime or other solids so deposited stop up the passages and interfere with the efficiency and usefulness of the condenser or heater and make it necessary to discontinue the use of the apparatus or of sections of it for the purpose of removing the deposits.

In tubular condensers and heaters where water is passed through tubes the same deposits occur, and the use of the heater or condenser must be discontinued While the deposits are being removed.

My invention relates to an improvement in the manner of constructing condensers and heaters to permit of the separation of each tube for the doublepurpose, first, of cleaning or inspection Without in any way interfering with any other tube or the operation of the apparatus; secondly, of lessening the surface of the outer tube which is exposed to the atmosphere in comparison with the surfaces of the inner pipes.

The accompanying drawing represents a partial side elevation and a partial vertical section ofa return-bend fitting embodying the principles of my invention, the fitting being one of a coil.

A A'tare metal tubes entering the returnbend fitting F. These tubes are threaded and have retaining-collars E. Packing rings L, of rubber or other suitable material, are held in place by the gland-castin g D. Two or more metal pipes B B are placed within the larger tubes A A, passing through the connectingport N of the return -bend casting F and through the back of the casting.

M are placed in recesses formed in the back of the return-bend casting F. These packingdisks are perforated for the pipes B B and are held in place by the casting G, which forms a packing-gland for each of the pipes B B, also in connection with the plate H, the connecting-port 0 connecting the pipes B with B. Through the plate H are hollow plugs opposite each of the pipes B B. These hollow plugs are fitted with the solid plugs R, and when they are screwed to the seats P incasting G and the plugs R are removed these hollow plugs close off pipes B B from the port 0 and permit of the pipesB B being cleaned or inspected.

Rubber disks or disks of suitable packing material Lugs are formed on the return-bend casting F. Threaded bolts C are held by these I lugs by means of nuts. Other nuts on the bolts 0 retain the adjustable packing-gland D in position and also attach the return-bend fitting rigidly to the large outer tubes A A, the threaded collars. E on the large outer tubes A A serving as shoulders for the return-bend casting F and permitting of the adjustment of the packing-rings L without disturbing the position of the return-bend casting F. Still other nuts on the bolts 0 retain the packing-gland and port-casting G and the plate II and permit of the adjustment of the packing-disks M.

Lugs K are formed 011 the top and bottom and on each side of the return-bend casting F for the purpose of bolting together-a nu mber of return-bend fittings to make up a return-bend coil.

End fittings similar to one-half of the return-bend fittings shown in the accompanying drawing, but suitably constructed with holes for pipe connections communicating with the ports N and O, are used for the ends of return-bend coils.

In tubular condensers or heaters Where a single outer shell contains many small tubes the construction is the same as the end fittings of the return-bend coil.

In operation a liquid or gas is caused to pass through the large outer tubes A A, which communicate with each other at each returnbend fitting through the ports N. Another liquid or gas is caused to pass through the small inner pipes B B, which communicate with each other at each return bend fitting through the ports 0 and heat or cold is transferred from one liquid or gas to the other liquid or gas through the walls of the small inner pipes B B. When used as a steam-condenser or as an ammonia-condenser, or for similar purposes where the cooling agent is usually Water,Which may contain solids which Will be deposited on the walls of the pipe, the cooling-water may be passed through the small inner pipes B B, as these pipes can each be cut off from communication with the ports 0 at each end of the pipe by means of the hollow plugs .I, which will admit of cleaniug the small inner pipes one at a time without interfering with the operation of the apparatus as a Whole.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isa In a condenser arid heater having several small pipes contained within a larger tube, all passing through fixed heads, other glandheads forming in connection with removable plates, ports for connecting the corresponding ends of all small pipes; seats formed in each perforation of the gland-heads opposite each small pipe; and short hollow plugs, plugged at their outer ends with removable solid plugs and screwed through the removable plates opposite each seat, all substantially as described.

RICHARD F. PIATT. \Vitnesses:

H. U. KINNISON, P. II. SAVAGE. 

